PTM 500 is the BASE ONLY, for units with a AE402 or GK Indicator purchase PTM 500 [GK] or PTM [AE402].

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What do the 100g x 1mg type numbers mean?

When we show pairs of numbers such as 100g X 1mg or 12kg x 0.1g we are using an industry-wide shorthand which represents: capacity x readability. The 'x' does not mean multiply but could be read as 'with'.

Capacity is the maximum mass that can be measured on that scale or balance.

Readability is the smallest difference that the scale or balance can weigh to and display. Readability can be also be referred to as graduations, precision and resolution.